Rev. Jamie Johnson stepped down from his position as the head of faith-based and neighborhood partnerships at the Department of Homeland Security (DHS) on Thursday after it emerged that he had previously accused black people of turning U.S. cities into the "slums," adding that Muslims only contributed "oil and dead bodies" to society.

The derogatory statement toward black people was made during a 2008 interview for conservative radio station, "The Right Balance" on Accent Radio Network, The Washington Post noted, but resurfaced in the report by CNN, which contained audio snippets.

"It's an indictment of America's black community that has turned America's major cities into slums because of laziness, drug use and sexual promiscuity," Johnson said, according to an audio recording posted by CNN.

He later criticised Islamic faith during an appearance on the Iowa radio program "Mickelson in the Morning."

"Islam is not our friend" he said, per CNN. "I agree with Dinesh D'Souza, your friend and mine, who says all that Islam has ever given us is oil and dead bodies over the last millennia and a half."

He added that Islam was "not a religion of peace."

In the years following those initial interviews, Johnson made several more inflammatory comments about Islam while appearing on the "Mickelson in the Morning" show.

Tyler Q. Houlton, acting press secretary of the DHS, confirmed Johnson's resignation, stating that his comments made prior to joining the department "clearly do not reflect the values of D.H.S. and the administration," adding that "the department thanks him for his recent work assisting disaster victims and the interfaith community," The New York Times noted.